D B Chavda (56 results)

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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condition: new. Paperback. India loses nearly 1,980 crore annually due to weeds, causing significant reductions in crop productivity. Weeds compete with crops for nutrients, water, sunlight, and space, resulting in considerable yield losses. Effective weed management is therefore essential for improving agricultural production. Weed control methods include mechanical, chemical, biological, cultural, and burning practices. Among these, mechanical weeding is economical, environmentally friendly, and suitable for small and fragmented farms.Intercultural operations are important for removing weeds and preventing their growth. Depending on crop and soil conditions, 2-4 weeding operations are generally required. Timely weeding improves crop growth and yield while minimizing plant damage.To address the need for an efficient and low-cost weeding implement, the study entitled "Performance Evaluation of Roller Weeder" was conducted. The roller weeder operated effectively up to a depth of 3.0 cm with a field capacity of 0.0393 ha/h and a power requirement of 0.043 hp. The maximum weeding efficiency achieved was 78.57%, with a performance index of 7116.5. The draft requirement for a 16 cm working width was 4.9 kg. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 60 pp. Englisch.

Paperback. Condition: new. Paperback. L'Inde subit chaque annee une perte de pres de 19,8 milliards de roupies due aux mauvaises herbes, ce qui entraine une baisse significative de la productivite des cultures. Les mauvaises herbes entrent en concurrence avec les cultures pour les nutriments, l'eau, la lumiere du soleil et l'espace, ce qui se traduit par des pertes de rendement considerables. Une gestion efficace des mauvaises herbes est donc essentielle pour ameliorer la production agricole. Les methodes de lutte contre les mauvaises herbes comprennent les pratiques mecaniques, chimiques, biologiques, culturales et le brulage. Parmi celles-ci, le desherbage mecanique est economique, respectueux de l'environnement et adapte aux petites exploitations agricoles morcelees. Les operations de desherbage interculturel sont importantes pour eliminer les mauvaises herbes et prevenir leur croissance. En fonction de la culture et des conditions du sol, 2 a 4 operations de desherbage sont generalement necessaires. Un desherbage effectue en temps opportun ameliore la croissance et le rendement des cultures tout en minimisant les dommages causes aux plantes. Afin de repondre au besoin d'un outil de desherbage efficace et peu couteux, l'etude intitulee Evaluation des performances d'un desherbeur a rouleaux a ete menee. Le desherbeur a rouleaux a fonctionne efficacement jusqu'a une profondeur de 3,0 cm, avec un rendement de 0,0393 ha/h et une puissance requise de 0,043 hp. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. …

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 60 pp. Spanisch.

Paperback. Condition: new. Paperback. India loses nearly 1,980 crore annually due to weeds, causing significant reductions in crop productivity. Weeds compete with crops for nutrients, water, sunlight, and space, resulting in considerable yield losses. Effective weed management is therefore essential for improving agricultural production. Weed control methods include mechanical, chemical, biological, cultural, and burning practices. Among these, mechanical weeding is economical, environmentally friendly, and suitable for small and fragmented farms.Intercultural operations are important for removing weeds and preventing their growth. Depending on crop and soil conditions, 2-4 weeding operations are generally required. Timely weeding improves crop growth and yield while minimizing plant damage.To address the need for an efficient and low-cost weeding implement, the study entitled "Performance Evaluation of Roller Weeder" was conducted. The roller weeder operated effectively up to a depth of 3.0 cm with a field capacity of 0.0393 ha/h and a power requirement of 0.043 hp. The maximum weeding efficiency achieved was 78.57%, with a performance index of 7116.5. The draft requirement for a 16 cm working width was 4.9 kg. This item is printed on demand. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability.…

Taschenbuch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware -India loses nearly ¿1,980 crore annually due to weeds, causing significant reductions in crop productivity. Weeds compete with crops for nutrients, water, sunlight, and space, resulting in considerable yield losses. Effective weed management is therefore essential for improving agricultural production. Weed control methods include mechanical, chemical, biological, cultural, and burning practices. Among these, mechanical weeding is economical, environmentally friendly, and suitable for small and fragmented farms.Intercultural operations are important for removing weeds and preventing their growth. Depending on crop and soil conditions, 2-4 weeding operations are generally required. Timely weeding improves crop growth and yield while minimizing plant damage.To address the need for an efficient and low-cost weeding implement, the study entitled 'Performance Evaluation of Roller Weeder' was conducted. The roller weeder operated effectively up to a depth of 3.0 cm with a field capacity of 0.0393 ha/h and a power requirement of 0.043 hp. The maximum weeding efficiency achieved was 78.57%, with a performance index of 7116.5. The draft requirement for a 16 cm working width was 4.9 kg. 60 pp. Englisch.…

Taschenbuch. Condition: Neu. PERFORMANCE EVALUATION OF ROLLER WEEDER | D. B. Chavda (u. a.) | Taschenbuch | Englisch | 2026 | LAP LAMBERT Academic Publishing | EAN 9786630154931 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu Print on Demand.…

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 60 pp. Französisch.

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - India loses nearly ¿1,980 crore annually due to weeds, causing significant reductions in crop productivity. Weeds compete with crops for nutrients, water, sunlight, and space, resulting in considerable yield losses. Effective weed management is therefore essential for improving agricultural production. Weed control methods include mechanical, chemical, biological, cultural, and burning practices. Among these, mechanical weeding is economical, environmentally friendly, and suitable for small and fragmented farms.Intercultural operations are important for removing weeds and preventing their growth. Depending on crop and soil conditions, 2-4 weeding operations are generally required. Timely weeding improves crop growth and yield while minimizing plant damage.To address the need for an efficient and low-cost weeding implement, the study entitled 'Performance Evaluation of Roller Weeder' was conducted. The roller weeder operated effectively up to a depth of 3.0 cm with a field capacity of 0.0393 ha/h and a power requirement of 0.043 hp. The maximum weeding efficiency achieved was 78.57%, with a performance index of 7116.5. The draft requirement for a 16 cm working width was 4.9 kg.…

Paperback. Condition: new. Paperback. A India perde anualmente cerca de 1 980 crore devido as ervas daninhas, o que provoca reducoes significativas na produtividade das culturas. As ervas daninhas competem com as culturas pelos nutrientes, pela agua, pela luz solar e pelo espaco, resultando em perdas consideraveis de rendimento. A gestao eficaz das ervas daninhas e, por isso, essencial para melhorar a producao agricola. Os metodos de controlo das ervas daninhas incluem praticas mecanicas, quimicas, biologicas, culturais e de queima. Entre estes, a remocao mecanica de ervas daninhas e economica, amiga do ambiente e adequada para exploracoes agricolas de pequena dimensao e fragmentadas. As operacoes interculturais sao importantes para remover ervas daninhas e prevenir o seu crescimento. Dependendo das condicoes da cultura e do solo, sao geralmente necessarias 2 a 4 operacoes de remocao de ervas daninhas. A remocao atempada de ervas daninhas melhora o crescimento e o rendimento das culturas, minimizando simultaneamente os danos nas plantas. Para dar resposta a necessidade de um implemento de remocao de ervas daninhas eficiente e de baixo custo, foi realizado o estudo intitulado Avaliacao do Desempenho do Removedor de Ervas Daninhas com Rolo. O capinador de rolos funcionou eficazmente ate uma profundidade de 3,0 cm, com uma capacidade de campo de 0,0393 ha/h e um consumo de potencia de 0,043 hp. A eficiencia maxima de capina alcancada foi de 78,57%, com um indice de desempenho de 7116,5. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condition: new. Paperback. Indie traca rocznie prawie 1 980 crore z powodu chwastow, co powoduje znaczny spadek wydajnosci upraw. Chwasty konkuruja z uprawami o skladniki odzywcze, wode, swiatlo sloneczne i przestrzen, co skutkuje znacznymi stratami plonow. Skuteczne zwalczanie chwastow ma zatem kluczowe znaczenie dla poprawy produkcji rolnej. Metody zwalczania chwastow obejmuja zabiegi mechaniczne, chemiczne, biologiczne, agrotechniczne oraz wypalanie. Sposrod nich pielenie mechaniczne jest ekonomiczne, przyjazne dla srodowiska i odpowiednie dla malych oraz rozdrobnionych gospodarstw. Zabiegi miedzyplonowe sa wazne dla usuwania chwastow i zapobiegania ich wzrostowi. W zaleznosci od uprawy i warunkow glebowych zazwyczaj wymagane sa 2-4 zabiegi pielenia. Terminowe pielenie poprawia wzrost upraw i plony, jednoczesnie minimalizujac uszkodzenia roslin. Aby zaspokoic zapotrzebowanie na wydajne i niedrogie narzedzie do pielenia, przeprowadzono badanie zatytulowane "Ocena wydajnosci pielnika rolkowego". Plug walowy dzialal skutecznie do glebokosci 3,0 cm, osiagajac wydajnosc polowa na poziomie 0,0393 ha/h przy zapotrzebowaniu na moc wynoszacym 0,043 hp. Maksymalna skutecznosc pielenia wyniosla 78,57%, a wskaznik wydajnosci - 7116,5. Zapotrzebowanie na sile pociagowa dla szerokosci roboczej 16 cm wynioslo 4,9 kg. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condition: new. Paperback. Indien verliert jaehrlich fast 19,8 Milliarden Rupien durch Unkraut, was zu erheblichen Einbussen bei der Ernteertraege fuehrt. Unkraut konkurriert mit Kulturpflanzen um Naehrstoffe, Wasser, Sonnenlicht und Platz, was zu erheblichen Ertragsverlusten fuehrt. Eine wirksame Unkrautbekaempfung ist daher fuer die Verbesserung der landwirtschaftlichen Produktion unerlaesslich. Zu den Methoden der Unkrautbekaempfung zaehlen mechanische, chemische, biologische und agrotechnische Verfahren sowie das Abbrennen. Unter diesen ist die mechanische Unkrautbekaempfung wirtschaftlich, umweltfreundlich und fuer kleine sowie zersplitterte landwirtschaftliche Betriebe geeignet. Zwischenkulturen sind wichtig, um Unkraut zu entfernen und dessen Wachstum zu verhindern. Je nach Kulturpflanze und Bodenbedingungen sind in der Regel 2-4 Unkrautbekaempfungsmassnahmen erforderlich. Eine rechtzeitige Unkrautbekaempfung verbessert das Pflanzenwachstum und den Ertrag und minimiert gleichzeitig Schaeden an den Kulturpflanzen. Um dem Bedarf an einem effizienten und kostenguenstigen Unkrautbekaempfungsgeraet gerecht zu werden, wurde die Studie mit dem Titel "Leistungsbewertung eines Walzen-Unkrautbekaempfers" durchgefuehrt. Der Walzen-Unkrautvernichter arbeitete effektiv bis zu einer Tiefe von 3,0 cm bei einer Flaechenleistung von 0,0393 ha/h und einem Leistungsbedarf von 0,043 hp. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condition: new. Paperback. L'India subisce ogni anno una perdita di quasi 1.980 crore a causa delle erbacce, che provocano una significativa riduzione della produttivita delle colture. Le erbacce competono con le colture per le sostanze nutritive, l'acqua, la luce solare e lo spazio, causando notevoli perdite di resa. Una gestione efficace delle erbacce e quindi essenziale per migliorare la produzione agricola. I metodi di controllo delle erbacce comprendono pratiche meccaniche, chimiche, biologiche, colturali e di bruciatura. Tra questi, il diserbo meccanico e economico, rispettoso dell'ambiente e adatto alle aziende agricole di piccole dimensioni e frammentate. Le operazioni interculturali sono importanti per rimuovere le erbacce e prevenirne la crescita. A seconda delle condizioni delle colture e del suolo, sono generalmente necessarie da 2 a 4 operazioni di diserbo. Un diserbo tempestivo migliora la crescita e la resa delle colture, riducendo al minimo i danni alle piante. Per rispondere all'esigenza di un attrezzo per il diserbo efficiente e a basso costo, e stato condotto lo studio intitolato "Valutazione delle prestazioni del diserbatore a rullo". Il diserbatore a rulli ha funzionato efficacemente fino a una profondita di 3,0 cm, con una capacita di lavoro di 0,0393 ha/h e un fabbisogno di potenza di 0,043 hp. L'efficienza massima di diserbo raggiunta e stata del 78,57%, con un indice di prestazione pari a 7116,5. Il fabbisogno di trazione per una larghezza di lavoro di 16 cm era di 4,9 kg. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. …

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - La India pierde casi 19.800 millones de rupias al año debido a las malas hierbas, lo que provoca reducciones significativas en la productividad de los cultivos. Las malas hierbas compiten con los cultivos por los nutrientes, el agua, la luz solar y el espacio, lo que da lugar a pérdidas considerables de rendimiento. Por lo tanto, una gestión eficaz de las malas hierbas es esencial para mejorar la producción agrícola. Los métodos de control de las malas hierbas incluyen prácticas mecánicas, químicas, biológicas, culturales y de quema. Entre ellos, el deshierbe mecánico resulta económico, respetuoso con el medio ambiente y adecuado para explotaciones pequeñas y fragmentadas. Las labores entre cultivos son importantes para eliminar las malas hierbas y prevenir su crecimiento. Dependiendo del cultivo y de las condiciones del suelo, suelen ser necesarias entre 2 y 4 operaciones de deshierbe. El deshierbe oportuno mejora el crecimiento y el rendimiento de los cultivos, al tiempo que minimiza los daños a las plantas. Para dar respuesta a la necesidad de un implemento de deshierbe eficiente y de bajo coste, se llevó a cabo el estudio titulado 'Evaluación del rendimiento del deshierbador de rodillos'. El desbrozador de rodillos funcionó eficazmente hasta una profundidad de 3,0 cm, con una capacidad de trabajo de 0,0393 ha/h y un consumo de potencia de 0,043 hp. La eficiencia máxima de desbroce alcanzada fue del 78,57 %, con un índice de rendimiento de 7116,5.…